20551384

素因数分解:

$2^3\times 7^2\times {\mathrm{103}}^1\times {\mathrm{509}}^1$

素因数の和:632

約数の個数: 48

約数和(自身を含む): 45349200

約数和(自身を除く): 24797816

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 103, 196, 206, 392, 412, 509, 721, 824, 1018, 1442, 2036, 2884, 3563, 4072, 5047, 5768, 7126, 10094, 14252, 20188, 24941, 28504, 40376, 49882, 52427, 99764, 104854, 199528, 209708, 366989, 419416, 733978, 1467956, 2568923, 2935912, 5137846, 10275692, 20551384]

約数ペア:

[(1, 20551384), (2, 10275692), (4, 5137846), (7, 2935912), (8, 2568923), (14, 1467956), (28, 733978), (49, 419416), (56, 366989), (98, 209708), (103, 199528), (196, 104854), (206, 99764), (392, 52427), (412, 49882), (509, 40376), (721, 28504), (824, 24941), (1018, 20188), (1442, 14252), (2036, 10094), (2884, 7126), (3563, 5768), (4072, 5047)]